boneblack

or bone black

[bohn-blak] /ˈboʊnˌblæk/

Word Origin

noun

a black, carbonaceous substance obtained by calcining bones in closed vessels, used as a black pigment, a decolorizing agent, etc.

Origin of boneblack

1805-1815

First recorded in 1805-15; bone + black

Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2018.
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Examples from the Web for boneblack

Historical Examples

While they may improve conditions somewhat, the only solution to such a problem is the use of the boneblack process.

The Philippine Agricultural Review Various

British Dictionary definitions for boneblack

boneblack

/ˈbəʊnˌblæk/

noun

a black residue from the destructive distillation of bones, containing about 10 per cent carbon and 80 per cent calcium phosphate, used as a decolorizing agent and pigment

Collins English Dictionary - Complete & Unabridged 2012 Digital Edition
© William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
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boneblack

or bone black

boneblack

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